From ee196371d5cb1942ebdccc16bdce389812aa265e Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 9 Sep 2015 15:39:49 -0700 Subject: [PATCH] dma-mapping: consolidate dma_supported Most architectures just call into ->dma_supported, but some also return 1 if the method is not present, or 0 if no dma ops are present (although that should never happeb). Consolidate this more broad version into common code. Also fix h8300 which inorrectly always returned 0, which would have been a problem if it's dma_set_mask implementation wasn't a similarly buggy noop. As a few architectures have much more elaborate implementations, we still allow for arch overrides. [jcmvbkbc@gmail.com: fix xtensa] Signed-off-by: Christoph Hellwig Cc: Arnd Bergmann Cc: Russell King Cc: Catalin Marinas Cc: Will Deacon Cc: Yoshinori Sato Cc: Michal Simek Cc: Jonas Bonn Cc: Chris Metcalf Cc: Guan Xuetao Cc: Ralf Baechle Cc: Benjamin Herrenschmidt Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Andy Shevchenko Signed-off-by: Max Filippov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/alpha/include/asm/dma-mapping.h | 5 ----- arch/arm/include/asm/dma-mapping.h | 6 +++--- arch/arm64/include/asm/dma-mapping.h | 6 ------ arch/h8300/include/asm/dma-mapping.h | 5 ----- arch/hexagon/include/asm/dma-mapping.h | 1 + arch/ia64/include/asm/dma-mapping.h | 6 ------ arch/microblaze/include/asm/dma-mapping.h | 13 +------------ arch/mips/include/asm/dma-mapping.h | 6 ------ arch/openrisc/include/asm/dma-mapping.h | 5 +++-- arch/powerpc/include/asm/dma-mapping.h | 11 ----------- arch/s390/include/asm/dma-mapping.h | 9 --------- arch/sh/include/asm/dma-mapping.h | 10 ---------- arch/sparc/include/asm/dma-mapping.h | 1 + arch/tile/include/asm/dma-mapping.h | 6 ------ arch/unicore32/include/asm/dma-mapping.h | 10 ---------- arch/x86/include/asm/dma-mapping.h | 4 +++- arch/xtensa/include/asm/dma-mapping.h | 6 ------ include/asm-generic/dma-mapping-common.h | 13 +++++++++++++ 18 files changed, 25 insertions(+), 98 deletions(-) diff --git a/arch/alpha/include/asm/dma-mapping.h b/arch/alpha/include/asm/dma-mapping.h index 80ac3e835efe..9d763e535c5a 100644 --- a/arch/alpha/include/asm/dma-mapping.h +++ b/arch/alpha/include/asm/dma-mapping.h @@ -12,11 +12,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) #include -static inline int dma_supported(struct device *dev, u64 mask) -{ - return get_dma_ops(dev)->dma_supported(dev, mask); -} - static inline int dma_set_mask(struct device *dev, u64 mask) { return get_dma_ops(dev)->set_dma_mask(dev, mask); diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h index 9bef3c541c39..2f9c731691c0 100644 --- a/arch/arm/include/asm/dma-mapping.h +++ b/arch/arm/include/asm/dma-mapping.h @@ -38,12 +38,14 @@ static inline void set_dma_ops(struct device *dev, struct dma_map_ops *ops) dev->archdata.dma_ops = ops; } +#define HAVE_ARCH_DMA_SUPPORTED 1 +extern int dma_supported(struct device *dev, u64 mask); + /* * Note that while the generic code provides dummy dma_{alloc,free}_noncoherent * implementations, we don't provide a dma_cache_sync function so drivers using * this API are highlighted with build warnings. */ - #include static inline int dma_set_mask(struct device *dev, u64 mask) @@ -172,8 +174,6 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) static inline void dma_mark_clean(void *addr, size_t size) { } -extern int dma_supported(struct device *dev, u64 mask); - extern int arm_dma_set_mask(struct device *dev, u64 dma_mask); /** diff --git a/arch/arm64/include/asm/dma-mapping.h b/arch/arm64/include/asm/dma-mapping.h index f45f444b7a66..f519a58c55ae 100644 --- a/arch/arm64/include/asm/dma-mapping.h +++ b/arch/arm64/include/asm/dma-mapping.h @@ -84,12 +84,6 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr) return (phys_addr_t)dev_addr; } -static inline int dma_supported(struct device *dev, u64 mask) -{ - struct dma_map_ops *ops = get_dma_ops(dev); - return ops->dma_supported(dev, mask); -} - static inline int dma_set_mask(struct device *dev, u64 mask) { if (!dev->dma_mask || !dma_supported(dev, mask)) diff --git a/arch/h8300/include/asm/dma-mapping.h b/arch/h8300/include/asm/dma-mapping.h index 5eef05382fff..48d652eb1b5f 100644 --- a/arch/h8300/include/asm/dma-mapping.h +++ b/arch/h8300/include/asm/dma-mapping.h @@ -10,11 +10,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) #include -static inline int dma_supported(struct device *dev, u64 mask) -{ - return 0; -} - static inline int dma_set_mask(struct device *dev, u64 mask) { return 0; diff --git a/arch/hexagon/include/asm/dma-mapping.h b/arch/hexagon/include/asm/dma-mapping.h index e66119290eca..36e8de710b32 100644 --- a/arch/hexagon/include/asm/dma-mapping.h +++ b/arch/hexagon/include/asm/dma-mapping.h @@ -43,6 +43,7 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) return dma_ops; } +#define HAVE_ARCH_DMA_SUPPORTED 1 extern int dma_supported(struct device *dev, u64 mask); extern int dma_set_mask(struct device *dev, u64 mask); extern int dma_is_consistent(struct device *dev, dma_addr_t dma_handle); diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h index 27b713d0edbc..7982caa7c5e7 100644 --- a/arch/ia64/include/asm/dma-mapping.h +++ b/arch/ia64/include/asm/dma-mapping.h @@ -27,12 +27,6 @@ extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int, #include -static inline int dma_supported(struct device *dev, u64 mask) -{ - struct dma_map_ops *ops = platform_dma_get_ops(dev); - return ops->dma_supported(dev, mask); -} - static inline int dma_set_mask (struct device *dev, u64 mask) { diff --git a/arch/microblaze/include/asm/dma-mapping.h b/arch/microblaze/include/asm/dma-mapping.h index e5b843839263..3b453c503a43 100644 --- a/arch/microblaze/include/asm/dma-mapping.h +++ b/arch/microblaze/include/asm/dma-mapping.h @@ -44,16 +44,7 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) return &dma_direct_ops; } -static inline int dma_supported(struct device *dev, u64 mask) -{ - struct dma_map_ops *ops = get_dma_ops(dev); - - if (unlikely(!ops)) - return 0; - if (!ops->dma_supported) - return 1; - return ops->dma_supported(dev, mask); -} +#include static inline int dma_set_mask(struct device *dev, u64 dma_mask) { @@ -69,8 +60,6 @@ static inline int dma_set_mask(struct device *dev, u64 dma_mask) return 0; } -#include - static inline void __dma_sync(unsigned long paddr, size_t size, enum dma_data_direction direction) { diff --git a/arch/mips/include/asm/dma-mapping.h b/arch/mips/include/asm/dma-mapping.h index 158bb36bdcb4..8bf8ec30a4b2 100644 --- a/arch/mips/include/asm/dma-mapping.h +++ b/arch/mips/include/asm/dma-mapping.h @@ -31,12 +31,6 @@ static inline void dma_mark_clean(void *addr, size_t size) {} #include -static inline int dma_supported(struct device *dev, u64 mask) -{ - struct dma_map_ops *ops = get_dma_ops(dev); - return ops->dma_supported(dev, mask); -} - static inline int dma_set_mask(struct device *dev, u64 mask) { diff --git a/arch/openrisc/include/asm/dma-mapping.h b/arch/openrisc/include/asm/dma-mapping.h index 7dfe9d50856e..8fc08b883477 100644 --- a/arch/openrisc/include/asm/dma-mapping.h +++ b/arch/openrisc/include/asm/dma-mapping.h @@ -35,14 +35,15 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) return &or1k_dma_map_ops; } -#include - +#define HAVE_ARCH_DMA_SUPPORTED 1 static inline int dma_supported(struct device *dev, u64 dma_mask) { /* Support 32 bit DMA mask exclusively */ return dma_mask == DMA_BIT_MASK(32); } +#include + static inline int dma_set_mask(struct device *dev, u64 dma_mask) { if (!dev->dma_mask || !dma_supported(dev, dma_mask)) diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h index 712d5afc055a..dd43e0c6f219 100644 --- a/arch/powerpc/include/asm/dma-mapping.h +++ b/arch/powerpc/include/asm/dma-mapping.h @@ -124,17 +124,6 @@ static inline void set_dma_offset(struct device *dev, dma_addr_t off) #include -static inline int dma_supported(struct device *dev, u64 mask) -{ - struct dma_map_ops *dma_ops = get_dma_ops(dev); - - if (unlikely(dma_ops == NULL)) - return 0; - if (dma_ops->dma_supported == NULL) - return 1; - return dma_ops->dma_supported(dev, mask); -} - extern int dma_set_mask(struct device *dev, u64 dma_mask); extern int __dma_set_mask(struct device *dev, u64 dma_mask); extern u64 __dma_get_required_mask(struct device *dev); diff --git a/arch/s390/include/asm/dma-mapping.h b/arch/s390/include/asm/dma-mapping.h index 3c293291319b..1f42489797da 100644 --- a/arch/s390/include/asm/dma-mapping.h +++ b/arch/s390/include/asm/dma-mapping.h @@ -27,15 +27,6 @@ static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, #include -static inline int dma_supported(struct device *dev, u64 mask) -{ - struct dma_map_ops *dma_ops = get_dma_ops(dev); - - if (dma_ops->dma_supported == NULL) - return 1; - return dma_ops->dma_supported(dev, mask); -} - static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) { if (!dev->dma_mask) diff --git a/arch/sh/include/asm/dma-mapping.h b/arch/sh/include/asm/dma-mapping.h index 98308c497162..088f6e5f1a92 100644 --- a/arch/sh/include/asm/dma-mapping.h +++ b/arch/sh/include/asm/dma-mapping.h @@ -13,16 +13,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) #include -static inline int dma_supported(struct device *dev, u64 mask) -{ - struct dma_map_ops *ops = get_dma_ops(dev); - - if (ops->dma_supported) - return ops->dma_supported(dev, mask); - - return 1; -} - static inline int dma_set_mask(struct device *dev, u64 mask) { struct dma_map_ops *ops = get_dma_ops(dev); diff --git a/arch/sparc/include/asm/dma-mapping.h b/arch/sparc/include/asm/dma-mapping.h index 5069d137453b..184651bb0b46 100644 --- a/arch/sparc/include/asm/dma-mapping.h +++ b/arch/sparc/include/asm/dma-mapping.h @@ -7,6 +7,7 @@ #define DMA_ERROR_CODE (~(dma_addr_t)0x0) +#define HAVE_ARCH_DMA_SUPPORTED 1 int dma_supported(struct device *dev, u64 mask); static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, diff --git a/arch/tile/include/asm/dma-mapping.h b/arch/tile/include/asm/dma-mapping.h index f8f7a05023bf..559ed4a60077 100644 --- a/arch/tile/include/asm/dma-mapping.h +++ b/arch/tile/include/asm/dma-mapping.h @@ -74,12 +74,6 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) return addr + size - 1 <= *dev->dma_mask; } -static inline int -dma_supported(struct device *dev, u64 mask) -{ - return get_dma_ops(dev)->dma_supported(dev, mask); -} - static inline int dma_set_mask(struct device *dev, u64 mask) { diff --git a/arch/unicore32/include/asm/dma-mapping.h b/arch/unicore32/include/asm/dma-mapping.h index 175d7e3f7b0a..21231c14182c 100644 --- a/arch/unicore32/include/asm/dma-mapping.h +++ b/arch/unicore32/include/asm/dma-mapping.h @@ -28,16 +28,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) return &swiotlb_dma_map_ops; } -static inline int dma_supported(struct device *dev, u64 mask) -{ - struct dma_map_ops *dma_ops = get_dma_ops(dev); - - if (unlikely(dma_ops == NULL)) - return 0; - - return dma_ops->dma_supported(dev, mask); -} - #include static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h index bbca62e3e43f..b1fbf582048b 100644 --- a/arch/x86/include/asm/dma-mapping.h +++ b/arch/x86/include/asm/dma-mapping.h @@ -43,9 +43,11 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) bool arch_dma_alloc_attrs(struct device **dev, gfp_t *gfp); #define arch_dma_alloc_attrs arch_dma_alloc_attrs +#define HAVE_ARCH_DMA_SUPPORTED 1 +extern int dma_supported(struct device *hwdev, u64 mask); + #include -extern int dma_supported(struct device *hwdev, u64 mask); extern int dma_set_mask(struct device *dev, u64 mask); extern void *dma_generic_alloc_coherent(struct device *dev, size_t size, diff --git a/arch/xtensa/include/asm/dma-mapping.h b/arch/xtensa/include/asm/dma-mapping.h index 21925bfdaff7..329abc7211e9 100644 --- a/arch/xtensa/include/asm/dma-mapping.h +++ b/arch/xtensa/include/asm/dma-mapping.h @@ -32,12 +32,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) #include -static inline int -dma_supported(struct device *dev, u64 mask) -{ - return 1; -} - static inline int dma_set_mask(struct device *dev, u64 mask) { diff --git a/include/asm-generic/dma-mapping-common.h b/include/asm-generic/dma-mapping-common.h index cdaa24193d4c..67fa6bcd644c 100644 --- a/include/asm-generic/dma-mapping-common.h +++ b/include/asm-generic/dma-mapping-common.h @@ -327,4 +327,17 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) #endif } +#ifndef HAVE_ARCH_DMA_SUPPORTED +static inline int dma_supported(struct device *dev, u64 mask) +{ + struct dma_map_ops *ops = get_dma_ops(dev); + + if (!ops) + return 0; + if (!ops->dma_supported) + return 1; + return ops->dma_supported(dev, mask); +} +#endif + #endif -- 2.39.5